Electrical apparatus



Nov. 1, 1927. v 1,647,502

T.-w, CASE ELECTRICAL APPARATUS Filed Feb. 17, 1923 VENTOR zf Q. GLO/E/ TT RNPfs.

Patented Nov. 1, 1927.

UNITED STATES THEODORE WILLARD CASE, OF AUBURN, NEW YORK, ASSIGNOR TO CASE RESEARCH PATENT OFFICE.

LABORATORY INCORPORATED, OF AUBURN, NEW YORK, A CORPORATIONOF NEW YORK.

ELECTRICAL APPARATUS.

Application filed February 17, 1923.

This invention relates to a new and improved electrical apparatus, particularly adapted for translating sound waves into X-rays or variations of X-rays which can be efiiciently photographed or reproduced upon a film, thereby constituting a translatable film record of sound waves, particularly articulate or musical sound waves.

The invention centers especially about the utilization of an apparatus for producing X-rays as an apparatus for translating sound wave variations into X-ray variations, which may be photographed for the purpose of producing a translatable record of sound wave variations.

Other objects and advantages relate to the details of the apparatus, all as will more fully appear from the following description, taken in connection with the accompanying drawings, in which The figures diagrammatically illustrate embodiments of my invention.

The apparatus, as shown in Figure 1, comprises a microphone 1 connected in circuit with a source of potential, as battery -2, and the primary 3 of a trans former 4, the secondary 5 of which is connected in circuit with the filament 6 and grid '7' of an electron-discharge device ,8, the plate 9 of which is connected through a source ofpotential, as battery '10- with the grid l1 disposed within the bulb 12 of the X-ray tube.

The filament 6 may be heated in any suitable manner as by the heating circuit,

in the form of a plate, such circuit including a source of potential, as battery 17.

The X-ray tube operates in the usual manner by bombardment of the anode 16- by the cathode rays given oil by the heated filament 14-, the X-rays emanating from the plate or anode .16 as a result of such bombardment.

The intensity of such bombardment in the apparatus here disclosed is varied in accordance with sound wave variations which effect Serial No. 619,615.

variations in the potential of the grid -11,

which is preferably positioned, as shown, intermediate the filament -14 and plate 16 so as to eltect the intensity of the X-rays emanating from the plate. These rays may be photographed in any suitable manner by any suitable apparatus which may, perhaps, preferably embody a film 19 moving across the small slit 20. This slit may preferably be formed in a lead screen that to a maximum degree prevents the passage of the rays therethrough or the X-raytube may in any suitable and well known manner, be screened by such a plate of lead.

.In Figure 2 a somewhat different form of apparatus is illustrated in that the electrical variations, as produced by sound wave variations, are not brought in upon an electrode such as the grid 11, but on the other hand, the circuit connecting the filament 14 and the plate16- of the X-ray tube includes the secondary 21 of a transformer 22, the primary -23 of which is connected in circuit with the filament 6 and plate 9 of the electron-discharge device -8. In this manner, the electrical variations as effected by sound wave variations are applied directly to the filament plate circuit of the X-ray tube to efiect in a similar manner the intensity of the X-rays emanating from the plate16.

In Figure 3 a further embodiment of my invention is illustrated in that the filament 14 and the plates 16 of the X-ray tubes are connected directly in the circuit between the filament 6- and plate 9- of the electron-discharge device -8-- and the transformer 22- is entirely omitted.

In each of these apparatus, however, the X-rays emanating from the plate -16. are varied in intensity in accordance with electrical variations caused by sound wave variations, and a photographic record of the X-rays emanating from the plate 2- is in effect a re-translatable record of sound wave variations. The plate 16 in the usual manner should be formed of some material capable of withstanding the bombardment of cathode rays given 0E by the filament without material deterioration.

Battery 17 may be replaced by a generator to supply very high voltages or any known source capable of supplying the right current and voltage for the production of either soft or hard X-rays.

Altho I have shown and described specific' structures as illustrative of embodiments of my invention, I do not desire to limit myself to the details of form, construction or arrangement of the parts, as various changes maybe made in each without departing from the invention, as set forth in the appended claims.

I claim: 1 I r,

1. The combination with means for producing X-rays, of means for varying said rays in accordance with sound wave variations.

2. The combination with means for producing X-rays, of means for varying said rays in accordance with sound wave variations, and means for photographing the X-rays as varied.

3. The combination with an electric circuit, of means for varying said circuit in accordance with sound waves, means for amplifying such variations, means for pro-.

ducing X-rays, and means for varying the production of said X-rays in accordance with such am lified variations.

4. The com ination with an electric circuit, of means for varying said circuit in accordance with sound waves, means for amplifying such variations, means for producing X-rays, means for varying the proeamoa duction of said X-rays in accordance with such amplified variations, and means for photographin the X-rays as varied.

5. The com ination with means for producing X-rays, of means for varying the intensity, of said rays in accordance with sound wave variations.

6. The combination. with means for producing X-rays, of means for varying the intensity of said rays in accordance with sound wave variations, and means for photographing the X-rays as varied.

7. In an apparatus of the class described, means for producing X-rays including a bulbcontaining a pair of spaced electrodes, one of which-is adapted to be heated, means for heating the heatable electrode,j and means for varying the intensity of the X- rays in accordance with sound wave variations.

8. In an apparatus of the class described, means for producing X-rays including a bulb containing a pa r of spaced electrodes, one of which is adapted to be heated, means for heating the heatable electrode, means for varying the intensity of the X-rays in accordance with sound wave variations, and means for photographing the X-rays as Varied. I

In witness whereof I have hereunto set my 

